资源简介

(共20张PPT)
Unit 5 Water is life
主题范畴：
人与自然
主题群：
环境保护
子主题：
环境污染及原因，环保意识和行为
Key question
What does water mean to us
Discuss how to save water and the different ways of using water in daily life;
Improve my pronunciation of consonant clusters like /str/, /spl/, /spr/, and /skr/, focusing on the phenomenon of voicing assimilation;
Clearly express my views on saving water and other environmental protection issues in group discussions and communicate effectively.
Learning objectives 学习目标
At the end of the class, I’ll be able to:
Warming up
Talk in groups about how we use water at home.
Section 3 Expressing and communicating ideas
What can we use water for at home
drinking
bathing and showering
cooking food
We use water for + doing / to + do ...
We need to + do ...
washing hands
washing dishes
washing clothes
We use water for + doing / to + do ...
We need to + do ...
Talk in groups about how we use water at school.
What can we use water for at school
drinking
doing experiments
gardening
Talk in groups about how we use water at factory.
What can we use water for at factory
cooling machines
making products
Talk in groups about how we use water on farms.
What can we use water for on farms
watering crops
providing water for animals
Speaking
Task 1: Work in group of four. Talking about the usage of water in different places.
Different uses of water
At home: drinking, cooking food, bathing and showering, washing hands/dishes/clothes,
At school: drinking, washing hands, doing experiments, gardening, …
In factories: cooling machines, making products, …
On farms: watering crops, providing water for animals, …
While-learning
Now it’s your turns. You can follow the examples:
S1: Water is an important part of our lives. We use it for so many things at home.
S2: You’re right. We need to drink enough water every day to stay healthy.
S3: We also use water when we take a shower or bath.
S4: And we need water to cook food and to wash the dishes.
...
Group Report Time
How can we save water at the following situations
Situation: ______________
Water-saving tip: ________
_______________________
washing hands
Task 2: Talk with your deskmate
turn off the water when you’re not using it
When we are washing hands, we can ______ to save water.
Situation: ______________
Water-saving tip: ________
_______________________
drinking
use a water filter
How can we save water at the following situations
When we are drinking, we can ______ to save water.
Situation: ______________
Water-saving tip: ________
_______________________
washing clothes
collect enough clothes and use washing machine
How can we save water at the following situations
When we are washing clothes, we can ______ to save water.
We use water for + doing / to do ...
We need to + do ...
动词-ing形式：在句子中，动词加-ing形式常用于表达持续的动作或目的。
We use water for drinking. 我们用水来喝。
I am washing clothes. 我在洗衣服。
不定式（to +动词原形）：用来表达目的或需要。
We need to drink water. 我们需要喝水。
We need to wash our hands. 我们需要洗手。
We use water ____________(drink) every day.
We need water ____________(wash) our hands.
Water is used ____________(cool) machines in factories.
Farmers use water ____________(water) the crops.
to drink / for drinking
to wash
to cool / for cooling
to water / for watering
What do we use water for at school
A) To drink and do experiments B) To make products
C) To play games
2. How is water used on farms
A) To cook food B) To make machines
C) To water crops and provide water for animals
单项选择。
Improve your pronounciation
Listen and repeat. Pay attention to the letters in blue.
/str/ street strong /spl/ splash split
/spr/ spread spring /skr/ scream screen
辅音连缀/str/、/spl/、/spr/、/skr/中，存在清辅音浊化的现象。在一些单词中，我们需要把/s/后面的清辅音发成它对应的浊辅音。如：
① /tr/—/dr/: street中s后的/tr/常发/dr/的音
② /p/—/b/: spring中s后的/p/常发/b/的音
③ /k/—/g/: screen中s后的/k/常发/g/的音
(1) The strawberry plant in the garden looks strange, but the strawberries are nice and sweet.
(2) Heavy rain splattered on the roof and splashed against the windows of the splendid house.
(3) Spread the seeds around. In spring, you will have green sprouts as it rains.
(4) The screenwriter screamed when she spilt water on her script.
Listen and repeat. Pay attention to the letters in blue.
Card Game!
Listen and judge. Raise the Green Card hand if you hear the word in “a”; Raise the Red Card if you hear the word “b”.
1. /str/ vs /spr/ 2. /spr/ vs /spl/
a. strawberry b. spring a. spread b. splashed
3. /spl/ vs /str/ 4. /skr/ vs /str/
a. splendid b. strange a. screenwriter b. strawberry
Post-learning
Thank you!

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